encode php recordset in custom format - php

Question

I'm currently have a recordset created with dreamweaver and have encode the results in json format which work fine.
Recordset
$maxRows_rs_feeds = 3;
$pageNum_rs_feeds = 0;
if (isset($_GET['pageNum_rs_feeds'])) {
$pageNum_rs_feeds = $_GET['pageNum_rs_feeds'];
}
$startRow_rs_feeds = $pageNum_rs_feeds * $maxRows_rs_feeds;
mysql_select_db($database_vivalooks, $vivalooks);
$query_rs_feeds = "SELECT fname,lname FROM profile";
$query_limit_rs_feeds = sprintf("%s LIMIT %d, %d", $query_rs_feeds, $startRow_rs_feeds, $maxRows_rs_feeds);
$rs_feeds = mysql_query($query_limit_rs_feeds, $vivalooks) or die(mysql_error());
$row_rs_feeds= mysql_fetch_assoc($rs_feeds);
if (isset($_GET['totalRows_rs_feeds'])) {
$totalRows_rs_feeds = $_GET['totalRows_rs_feeds'];
} else {
$all_rs_feeds = mysql_query($query_rs_feeds);
$totalRows_rs_feeds = mysql_num_rows($all_rs_feeds);
}
$totalPages_rs_feeds = ceil($totalRows_rs_feeds/$maxRows_rs_feeds)-1;
do {
echo json_encode($row_rs_feeds);
} while ($row_rs_feeds = mysql_fetch_assoc($rs_feeds));
mysql_free_result($rs_feeds);
Recordset Results
{"fname":"Benjamin","lname":"Blay"}{"fname":"Alfread","lname":"Mark"}{"fname":"yaa","lname":"tiwaa"}
But i want the results to be encode like this rather
[{"fname":"Benjamin","lname":"Blay"},{"fname":"Alfred","lname":"Mark"},{"fname":"yaa","lname":"tiwaa"}]

Answer 1

Try
do {
$json[]=json_encode($row_rs_feeds);
} while ($row_rs_feeds = mysql_fetch_assoc($rs_feeds));
echo "[".implode(", ", $json)."]";
OR
do {
$rows[] = $row_rs_feeds;
} while ($row_rs_feeds = mysql_fetch_assoc($rs_feeds));
echo json_encode($rows);

Answer 2

You can change your loop to look like this:
echo "[";
$count = 0;
do {
if($count !== 0)
echo ",";
$count++;
echo json_encode($row_rs_feeds);
} while ($row_rs_feeds = mysql_fetch_assoc($rs_feeds));
echo "]";
$count is there just to skip first "," so you don't get [,{...},{...}] or you can put it like false/true... I just can't remember right now what is better in case you have 10k steps loop...

Answer 3

Try:
do {
$rows[] = $row_rs_feeds;
} while ($row_rs_feeds = mysql_fetch_assoc($rs_feeds));
echo json_encode($rows);